British films typically use natural lighting, unknown actors, and depict slices of life to seem realistic for audiences. Natural lighting saves on production costs compared to hired lighting crews and helps films feel more authentic. Unknown actors also keep costs low and make stories more believable by avoiding recognition from prior roles. Focusing on ordinary peoples' lives through "slices of life" shows viewers realistic versions of everyday experiences. Together, these techniques aim to attract audiences who appreciate social realism in an affordable, genuine way.